word list # 7

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Across
  1. 4. primary organ of the central nervous system
  2. 5. extended in time or space
  3. 6. a period of seven days in a row
  4. 9. relating to the circulation of blood through the body
Down
  1. 1. the color of emeralds and most leaves
  2. 2. muscular organ which circulates the blood
  3. 3. the throb of the heartbeat in the veins
  4. 4. to start or commence
  5. 7. not difficult
  6. 8. relating to the nerves in the body